Immunoglobulins (Ig) are glycoproteins molecules that are produced by plasma cells in response to an immunogen and which functions as antibodies. The immunoglobulins derived their name from the findings that they migrate with globular proteins when antibody containing serum is placed in an electric field. Immunoglobulins generally assume as one of the two roles-It acts as plasma membrane bound antigen receptor on the surface of B cells.

Correct Option: D

Immunoglobulins (Ig) are glycoproteins molecules that are produced by plasma cells in response to an immunogen and which functions as antibodies. The immunoglobulins derived their name from the findings that they migrate with globular proteins when antibody containing serum is placed in an electric field. Immunoglobulins generally assume as one of the two roles-It acts as plasma membrane bound antigen receptor on the surface of B cells.